Yeah! but I think I'll give the bluey the 150. I get it definitely, I guess I was just relying more on the size of the tank and its decor to reduce interactions instead of thinking of all of the risks. I'm still confused on one subject tho, I've read that if the inhabitants of a cohabitation tank are from the same geographic area, live on different levels, and have non overlapping diets, along with the reduced interactions due to nocturnal and diurnal habits that it should have worked out, had I done it. Which I won't.